Heater or condenser.



j .Y B' n 'MM K. M. DAHL. HEATER 0R GONDBNSER. APPLIUATION P ILED MAR. 9, 1912.

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ATTORNEYS UNITED 'STATES FFIQE.

KNUT Man'rI'N naH'L, or SAN FRANcrsco, onnrronNia, assIeNon, To UNION IRON WORKS oo., or SAN FnANo1soO,-oALirOnNrA, A CORPORATION or NEW JERSEY.

HEATER R CONDENSER;

Specification of Letters Patent.

Patented July 29, 1913.

Appueauoafned March 9, isis. serial No. ceases.

T (i all 'zc/ibm it may concern Be it known thatI, KNUT MARTIN DAHL,

` azcitizen vof .the United States, residing in the cit .and-county'of San Francisco, Stateofv Ca ifornia, have invented a new and useful Heater or Condenser, of which the following -is aspecifcation. l

The object of my present invention is to Asectional elevation of devise a novel construction of heater with novel construction otheads or closures and novel means for securing the coils with respect to such heads orclosures.

,tion but which for the purpose of illustra-V tion I havesho'wn as being cylindrical andprovided vwith an inlet conduit 2 anda discharge conduit 3, whereby steamer any other desired heating or cooling medium may be passed into and throughtlie heating or cooling chamber Ltot, the casing l.

5 designatescoils located within the heati-'ng or'condensing chamber 4 and although, in the present instance, I have shown two coils as being employed, 4it will be apparent thatin the broad and generic scope of my' invention, any number of coils may be em-v ployed.

The casing or-bodyfl is provided with -a top 'head for closure 6 secured thereto by means of fastening devices 39 passing through the flanges common to the closure 6 and the casing 1, while the lower or opposite end vof the casing l is provided with a closure 7 of novel construction andto which the coils are secured, whereby the vcoils may lie-removed from the casing 1 for inspection or repairs without disconnecting them from the closures 6Y and 7 respectively.

The lower end of the casing l is provided with an inwardly extending flange 8 which is singularly recessed to form a shoulder or i seat 9, it. being noted that the closure 7 is angularly recessed, as indicated at 10, in order Athat the same will seat on the angularly-shaped recess 9 ofthe flange 8.

. 1l designates a washer abutting against the lower end of thecasing 1 and through 'which are adapted to pass fastening devices 12 which, in the present instance, consists of lbolts in threaded engagement with Vthe lower closure 7. The coils at `their ends are by forming a shoulder'ylel which is adapted.

to engage the laterally extending flange 15 of a sleeve or .socket 16, which latter is provided with a bore therethrough, the inner end 17 of the said bore being of greater diameter 'than the outer end 18, it beingv most clearly shown that the outer end of the bore is of conical form, as is indicated at 19.

The flange V15 of the sleeve or socket 16 is j adapted to prevent rotation of such socket and, ein the present instance, is square, so that it will interlock with the enlarged lower portion of the recess 13 which'is also square.

20 designates the end of a. coil which passes through", the enlarged diameter 17 and is expanded into the bore 18 to form a fluid tight connection, the outer end ot" thev tube 2O being outwardly defiectedwor flared as at 21, in order that theisame willJ seat on the beveled walls 19 lof the sleeve 16.

22 designates a coupling member provided with a laterally extending flange 23 from vwhich convergesinwardly the inclined wall 24 which isadapted to engage the flared portion 21 of the tube 20. rIhe coupling 22 is angularly recessed as at 25 in order to receive vthe end of the conduit 26 shown in the present instance asa goose neck, such recess 25 forming a shoulder 27 against which the end of the goose neck abuts.. The coupling 22 near its outer end has its bore outwardly tapering or diverging, as at 28, Vso that when the parts are in the position seen inthe figure, with the goose neck in position, the brazing material 29 may be brazed in position in order to securely fasten the goose neck. 26 respect to 'the coupling 22, as

is evidentu The outer end of t e sleeve is threaded, as indicated at 30, thereby adapting the same to receive cap nut 31 which secures the coupling 22 with respect to the loo sleeve 16, and causes the inclined walls 2l of such coupling to firmly press the dei receive a nut 32 which engages a suitable face of the closure 6 to cause the flange 15 of the sleeve 16 to be maintained in fluid tight engagement with the shoulder 14 of the closure 6 and since the other end of the goose neck 26 is secured in a manner, similar to that alreadydescribed, I have therefore given corresponding parts similar reference characters.

The closure 6 is provided With a desired number of attaching devices 33 having any desired construction or contour and, in the present instance, they are shown as consisting of I-bolts engaging bosses on the closure 6, whereby when the fastening devices 39 and 12 are loosened, the upper and lower closures, as Well as the heater coils may be removed from the casing 1 Without rendering it necessary to disconnect the coils from such closures.

In the operation, assuming that the parts are in assembled position, as indicated in the figure, the oil or other liquid which lis to be heated passes from the oil pump or other source of liquid supply through the conduit 34 which is preferably provided with. a controlling valve 35 of' any desired or conventional type. The oil passes thro-ugh the coil 5 to Which it is connected, thence thrbugh the goose neck 26 into the second coil, to a desired point of' utilization, such as for example a burner o-r atomizer of an oil burning system.

Although my novel construction of a heater is especially designed to be employed as a heater in conjunction With oil burning systems, it will be apparent that the same is adapted to be employed either as a heater or condenser, depending upon the character of the medium which circulates through the inlet pipe 2, the chamber 4 of the casing l. and therefrom' through the conduit 3, and it is therefore to be understood that I do not desire to be limited to a device which is only closure 7 it being seen that the closure 7 has f an increased thickness of metal to receive the fastening devices 12.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is z- 1. An apparatus as described comprisinga casing provided at one end with an inwardly disposed flange, a head bearing against the opposite end of the casing, a closure located in the casing, a pipe passing through and secured to the head and closure and traction means -For drawing the closure against the flange.

2. An apparatus as described comprising a casing Wardly disposed flange, a head bearing against the opposite end of the casing, a closure located in the casing, a lpipe passing through the head and closure, means for adjustably fixing the pipe to the head and closure, and traction means for drav'ving the closure against the fiange.

3. An apparatus as described comprising a casing provided at one end With an in- Wardly disposed flange, a head bearing against the'opposite end of the casing, a closure located in the casing, a coiled pipe passing through and secured to the head and closure and traction means for drawing the closure against the flange. l

KNUT MARTIN DAI-IL.

Witnesses;

MAURICE AsHER, FREDERICK BIRDSALL.

Copies of this patent may be obtained for ve cents each, by addressing the Gommissioner of PatentsJ Washington, D. C.

rovided at one end with an in? 

